Feeding mechanism for autographic registers



April 20 1926. 1,581,847

M. MACDONALD FEEDVING MECHANISM FOR AUTOGRAPHIC REGISTERS Filed March 3l 1924 3 Sheets-Sheet 1 ATrme/vfn April 20,1926.

` M. MACDONALD FEEDING MECHANISM FOR AUTOGRAPHIC REGISTERS 5 sheets-sheet 2 Fied Maron 51 1924 April 2o 1926. 1,581,841

M. MACDONALD FEEDING MECHANISM FOR AUTOGRAPHIC REGISTERS Filed March 5l 1924 5 Sheets-Sheet 5 Patented Apr. 20, 1926.

MURDOCK MACDONALD, OF CLEVELAND, OHIO.

FEEDING`MECHANISM FOR AUTOGRAPHIC REGISTERS.

Application led March 31, 1924. Serial N'o. 703,021.

To all rwhom t ma concern:

Be it known that MUnDocK MACDONALD, a citizen of the United States, resident of the city of Cleveland, county of Cuyahoga, and State of Ohio, have invented new and useful Improvements in' Feeding Mechanism for Autographic Registers, of which the following isa specification, the principle of the invention being herein explained and applying that principle, so as to distinguish the best Vmode in which I have contemplated it from other inventions.

My invention relates to devices for feeding superposed sheets of paper in an autographie register and in which means are provided for longitudinally realining the sheets periodically so as to restore registration thereof.

The object of the invention is to provide a simple and effective mechanism for effecting such realinement and registration.

The said invention consists of means hereinafter fully described and hereinafter particularly set forth in the claims.

More specifically the invention is applicable to that class of realining devices in connection with which the paper is provided with longitudinally spaced perforations such as are shown, for example, in my pending application, Serial Number 416,349, filed October 12, 1920.

,Fig 1, and viewed in the direction indicated by the arrows associated with said' line.

Fig. 3 represents a fragmentary section taken upon the planes indicated by lines III-III, Fig. 1, and viewed in the direction' indicated by the arrows.

Fig. 4 represents a section similar to thatA l of Fig. 1 showing the parts in a different position.

Figs.- 5 and 6 represent detail sections handle v4. A

similar to that of Fig. 2 showing the parts in different positions.

Fig. 7 represents a fragmentary section taken upon the planes indicated by lines Vll-VIL Fig. 4.

Fig. 8 represents a fragmentary plan showin the position of the paper sheets when tiey are out of register.

Figs. 9. to 14 inclusive illustrate, on an exaggerated scale, views similar to those of Figs. 2, 5, and 6, and in which the paper is shown of proportionally much greater thicknessas compared with the dimensions of the mechanism with which it cooperates, than exists in actual practice, such increased thickness being adopted in order that the action of s uch paper as a result of the operation of the realining mechanism may be more readily followed in the subsequent description.

Fig. 15 represents a magnified section taken upon the plane indicated by line XVXV, Fig. 12.

t In the illustrated embodiment of my invenion, in suitable bearings 2, a longitudinal primary driving shaft 3, which projects laterally upon one side of the frame and has secured to -such projecting end an operating spring-actuated in 5 is also mounted on said frame and pro]ects laterally therefrom into the path of movement of said handle so as to punctuate' one complete revolution of the latter, .in a manner herei tofore employed, and as will be readily understood. Said in may be ressed inwardly toward the fi'aine by the and, when it is desired to turn the handle to effect the next feeding operation.

Against the inner faces of the two sides of the frame are fixedly secured in any upon the frame 1, Fig. 1, is mounted,

suitable manner, two bearing plates 6-6,

Fig. 1, and in Contact therewith are two verticall reciprocable carrier slides 7-7. These sides are centrally positioned with reference to the axis of the shaft 3 and each is provided with an enlarged opening 8, through which said shaft extends. Each slide is furthermore formed with two guideslots 9, through which extend screws 10--10, threaded into suitable holes in the frame as shown. The heads of the screws are upon the inside of the frame and thus retain the slides in place, while at the same time permitting t em to reciprocate verticall 1n a path limited bythe length of the s ots 9.

Y portion To the bottom of each slide is secured one end of a coil-spring 11, the other end of which is suitably secured to the frame.

The' upper end of each slide is provided with a bearing 12 in which are mounted the ends of a secondary or counter driving shaft 13 parallel with and vertically above shaft 3, as shown in Fig. 3.

Mounted upon and fixed to shaft 3 is a gear wheel 14 which meshes with a pinion 15 mounted upon and fixed to the shaft 13, Figs. 1 and 3. Also mounted upon said shaft 13, and intermediately of its ends and between the plates of the frame are two primary feed-rolls 16-16. Each of these iolls includes a hub 17, and set screw 18 by means of which the roll is fixed upon the shaft, a driving-portion 19, and a circular plate 20 spaced from the portion 19 by a boss 21. The driving-portion has a cylindrical knurled peripheral surface 22, interrupted by a flat section 23, Figs. 9 to 13. The plate 20 is of less diameter than the circular part of the roll portion 19.

Said roll portion 19 and the plate 20 are each provided with radial slots 24 which are laterally in alinement with each other, having their longitudinal axes lying in" a plane perpendicular to the middle of the flat section 23, and are located in proximity to said section.

These slots form a bearing for the spindle 25 of an idle-roll'26, which spindle projects laterally from opposite sides of the roll 19 and plate 20, as shown in Figs. 1 and 4. These projecting opposite ends are engaged by two leaf springs 27-27, Figs. 1 and 2, which are mounted respectively upon the outer faces of roll portion 19 and plate 20. These springs urge the spindle outwardly to engage the outer ends of the slots 24 asshown in-Fig. 1. In this position of said spindle the perlphery of the idle roll 26 projects some distance outwardly beyond the periphery of roll portion 19 as shown in Fig. 2, excepting at certain times during the operation of the device, as will be hereinafter described. Rolls 26 have their cylindrical surfaces knurled.

Upon the counter-shaft 13 'are ixedly secured two secondary feed-rolls 28-28 having knurled cylindrical surfaces, and each formed with a hub 29 extending from both sides thereof as shown in Figs. 1 and 4. Each such roll is in vertical alinement with one of the idle rolls 26. Mounted and rotatable upon one of the portions of each of the hubs 29 is a primary idle roll 30, having a knurled cylindrical surface, each of such rolls being in vertical alinement with one of the primary feed-roll portions 19.

The peripheral width of the secondary feed-rolls 28-28and the width of the secondary idle-rolls 26--26 is made less than the diameter of the perforations 32, and the `feed-rolls latter are so spacedv transversely that said rolls are positioned centrally with reference to said perforations, all as shown in Fig. 15.

The diameter of the secondary feed-rolls 28-28 is made greater than that of the pinion 15, and the diameter of the peripheral `feed-surface 22 is made less than the diameter of the gear Wheel 14. As a consequence, the linear velocity of the periphery of roll portion 19 is less than the linear velocity of the pitch-line of gear 14. The linear velocity of the pitch-line of pinion 15A is the same as that of gear 14, and the linear velocity of the periphery of roll 28-28 is greater than that of the pitch-line of pinion 15. The linear velocity of the periphery of rolls 28--28 is therefore considerably greater than that of the periphery of roll-portion 19.

It will be noted from the above construction that the springs 11-11 tend to move the shaft 13 toward the shaft 3, hence to move the primary idle-rolls 30 into Contact with the portion 19-19 of the primary feedrolls 16-16, and at the same time urge the secondary feed rolls 28 toward the said primary feed rolls 16-16. I

It will also be noted that when the idlerolls 26 (which I shall hereinafter designate as the secondary idle-rolls) project outwardly from the primary feed-rolls 16-16, a circle drawn through the outermost peripheral portion of either of them and having its center in the axis ofthe shaft 3, will intersect the corresponding secondary feed roll 28, as will be seen from an inspection of Fig. 9.

The parts are so relatedv that when the handle 4 is in contact with the pin 5, rolls 16-16 are in a position in which the secondary idle-rolls 26-26 are above the shaft 3, and will have passed a little beyond their uppermost position, as shown in Fig. .13.

Having described the construction and relation of the parts of the invention, I shall now describe its operation.

Let it be assumed that the superposed sheets 31 of pa er have been inserted between the opposltely disposed rolls,that the handle is in the position shown in Fig. 4, in which it is lin engagement with the pin 5, and the paper sheets are in alinement, that is the perforations 32 thereof are in alinement with each other. The parts are furthermore so arranged that at this time the secondary idle-rolls' 26-26 will be located beneath and in contact with the secondary feed-roll 28--28,'as shown in Fig. 12, the perforations will be located just beyond the rearmost edges 33 of the flat sections 23. the feed surfaces 22 of the primary 16-16, and the cooperating knul-led surfaces of the primary idle-rolls 30-30 will have taken hold of the paper behind the perforations 32, 'so that a subsequent rotation of these rolls would feed llO the paper forwardly, the direction of such feed being indicated by the arrows.

The parts and paper being in the abov described osition, the pin 5 is pushed back and the liandle so' released. Upon then turning the handle the paper is fed through by the primary feed-rolls l6-16, and the copei'ating primary idle-'rolls 30, the secondary idle-rolls 26 revolving around the axis of theshaft 3 and in disengagement with the secondary feed-rolls 28-28- During such forward feeding, let it now be assumed that the sheets are or become disalined as shown in Fig. 9, the uppermost sheet advancing beyond the lowermost, for example. y

As the next penforations 32 approach the feed-rolls and the forward movement of the sheets is continued, the yfiat sections 23 come opposite the primary idle-rolls 30-30 and render the portions' 19-19 of the primary feed-rolls 16-16 inoperative. At about the same time, the secondary idle-rolls 26-26Y .cooperate with the seconda 25 feed-rolls 28--28 to continue the forwar feeding of the sheets, such secondary idle-rolls being caused to yield inwardly toward the axis of the shaft 3, and pressingthe paper againstthe secondary rolls 28-28. The operative ness of the secondary feed-rolls 2S-28mm tinues as long as the fiat-sections 23 renden vthe primary feed-rolls inoperative, proper len of such section being adopted to accomplish this) and during such period, the feeding operation takes lplace at a rapid rate as a result of the previously'described greater linear velocity of the periphery of the rolls 28--28.

Fig. 9 shows the position of the paper and perforations with reference Vto the feed-rolls, after the secondary feedin has been begun, and Fig. 10 after such -fee ing hasadvanced still further.

Should the sheets be out of alinement, as shown in Fig. 9, the secondary rolls 28--28 and 26-26'wil1 advance the lower sheets progressively as indicated in Figs. 10 and 11,'

until they are a ain in alinement, as shown in full ,lines in ig. 1K2.

Should the sheets be in the position of disalinement as shown in Fig.- 14, in which the lower sheets are in advance of the upper one, i

the seconda-ry feeding mechanism will advance the uppermost sheets progressively until they are realined. v

The forwardfeeding by the secondary feeding means continues until the secondaryv idlers 26-26 cease to exert sufficient pressure upon the paper to continuato be effective, at which time the handle 4 strikes the'pin 5 and further operation is discontinued, such discontinuance marking the time at which the pa r which has been fed forwardly out of t e machine is to be torn off.

The comparative rapid operation of the being arranged to be secondary feedin means, insures the completion of the rea ining action, even though the length of the arc through which such -means are operative, be comparativelyshort.

What I claim is:

l. In a device of the character described, two pairs of oppositely disposed feed-rolls; each set consisting of a positively driven and an idle feed-roll; the rolls of one pairtwo pairs of oppositely disposed feed-rolls, each pair consistin of a positively driven and an idle roll; te rolls of the one pair intermittently ino rative and the rolls of the'other air eing arranged to become operative ciiiring the period fof operation of the other pair; the arrangement being further such that the periphery of the one driven roll will have a greater linear velocity than that of the other driven roll.

3. In a device of the character described, the combination with two parallel shafts and means for driving same in opposite directions; of two pairs of oppositely disposed feed-rolls mounted u on said shafts, each air consistingl of a red and an idle roll,

ut one fixed and one idle roll `being mounted upon each shaft; the rolls of the one pair being arranged to become intermittently inoperative and the rolls of the other pair being arranged to become intermittently operative during the period of inoperation and intermittently inoperative during the period of operation of the other pair.

4. In a device of the the combination of a primary driving feedroll; a (primary idle feed-roll cooperating with sai driving roll; a secondary driving feed-roll mounted coaxially u on said idle roll; and a secondary idle fee -roll having an axis of rotation parallel with the axis of rotation of said primary driving roll, mounted so as to revolve about the axis of the latter and 'adapted to cooperate with said secondarydriven roll.

5. In a device of the character described, the combination of a primary driving feedroll; a irimary idle-feed roll cooperating -with sai driving-roll; a secondary driving feed-roll mounted coaxially with said` idle roll; and .a secondary idle feed-roll having an axis of rotation parallel with the axis of rotation of said primary drivingroll, mounted so as to revolve about the axis of said primary driving roll' and adapted to cooperate with said secondarydriving roll; said .secondary` idle roll being also character described,

2. Ina device of the character described,'

mounted so as to be capable of yielding toward theaxis of the primary driving roll. 6. In a device of the character described,

' the combination of a primary driving feedroll; a primary idle feed-roll cooperating with said driving roll; a secondary driving feed-roll mounted coaxially with said idle roll; and a secondary idle feed-roll having an axis of rotation parallel with the axis of rotation of said primary driving roll, mounted so as to revolve about the axis of and synchronously With primary drivingroll; and adapted to cooperate with said -secondary driving-roll; said secondary idle roll being also mounted so as to be capable of yieldin toward the axis of said primary driving ro l.

7. In a device of the character described, the combination of a primary driving feedroll; a Kprimary idle-eed-roll cooperating with sai driving roll; a secondary driving feed-roll mounted coaxially with said idle roll; and a secondary idle feed-roll having an axis of rotation parallel with the axis of rotation of said primary driving roll, mounted so as to revolve about the axis of said primary driving roll and adapted to cooperate with said secondary driving roll; said secondary idle roll being alsomounted so as to be capable of yielding toward the axis of said rimary driving roll and also so that a cire e having its center in the axis of said rimary driving roll and passing though t e outermost surface of said secondary idle roll when in its non-yielding position, will intersect the said secondary driving roll.

8. In a device of the character described, the combination of a primary driving feedroll; a primary idle feed-roll cooperating with said driving roll; said primary roll having a cut-out section whereby said -two rolls are periodically rendered inoperative; a secondary idle feed-roll mounted upon said primary driving roll and eccentrically with relation thereto; and a secondary driving roll lying in the path of movement of said secondary idle roll whereby the latter is caused to intermittently cooperate with said secondary driving'roll; said Secondary idle roll being positioned laterally adjacent said cut-out section, whereby said secondary driving roll becomes operative when the primary driving roll becomes inoperative.

9. In a device of the character described, the combination of two parallel shafts; gearing connecting same whereby they may be simultaneously driven; a primary feedroll mounted upon and fixed to one of said shafts; a feed-roll rotatably mounted upon the other shaft and adapted to cooperate with said first-named feed-roll to feed superposed sheets of paper therebetween; a secondary feed-roll mounted upon and fixed to the other shaft and laterally adjacent to said rotatably mounted roll; and an idle roll mounted upon the primary feed-roll, eccentrically with relation thereto and adapted to cooperate intermittently with the ixedly mounted secondary roll to also feed such sheets; the primary feed-roll being arranged to be intermittently inoperative and said idle roll being arranged to cooperate with the secondary feed-roll during the period of inoperation of said primary feed-roll.

Signed by me this twentieth day of March, 1924.

MURDOCK MACDONALD. 

